Go to File Open File, select the AVI video you want to convert, click Open. Select File Export. Select Movie to MPEG-4 from the Export drop-down list. Your Mac's QuickTime will start converting AVI file to MP4 format. You can monitor the progress of your export in the popup small window. Transfer them to the video converter via drag-n-drop or by clicking the '+Video' button in the top left corner of the utility. You can insert the selected MP4 video clips one after another or add multiple videos to convert at once. Free MP4 to AVI Converter lets you easily encode any non-protected audio and video media.
Step 1: After download Handbrake Mac/Windows/Linux, open Handbrake.
Step 2: On the 'Source' field, click the 'Browse' button and choose the MP4 video file you want to convert to AVI file format from a new window popped up in front of the Handbrake interface.
Step 3: On 'Destination' portion of the Handbrake program window, select the output path where you want to save your new AVI file by clicking the 'Browse' button.
Step 4: Move your mouse to the 'Output Settings' field, and choose Xvid as the output video encoder from the 'Encoder'.
Step 5: Now simply click 'Start' button at the very top of the main Handbrake window to convert MP4 to AVI format. If you have multiple MP4 videos to convert, just click 'Add to Queue' button to queue and start task from the 'Encode Queue' dialog.
I have googled and googled and can't find a free MP4 to AVI converter Mac. Anyone, know a free software package that can convert mp4 to avi? Tried Handbrake and it doesn't convert to avi, at least the latest version 1.0.0 doesn't. - HardForum
Handbrake MP4 to AVI tips: the conversion from MP4 to AVI can be quite an easy task with Handbrake. But this MP4 to AVI conversion is only available in the older version of Handbrake like 0.9.2. For Handbrake 0.9.3 or above like the latest Handbrake, it shall be a little tricky to convert MP4 file to AVI format as AVI container and codec are dropped. You can set the video encoder as MPEG-4 codec. But the video quality therefore may be lower than that encoded with Xvid.